Leather-graining machine



(No Model.)

2 Sheets-Sheet; 1

M. M. SCOTT.

LEATHER GRAINING MACHINE.

Patented Nov. 27, 1888.

(No Model.)

2 Sheets-Sheet 2.

M. M. SCOTT.

LEATHER GRAINING MACHINE.

Patented Nov. 27, 1888.

W DY I N PETERS. mue n m. W'Ashiugtnn.

UNITED STATES PATENT OFFICE.

MAHLON M. SCOTT, OF NEYVARK, NEW JERSEY.

LEATHER-GRAINING MACHINE.

SPECIFICATION forming part of Letters Patent No. 393,486, dated November 27, 1888.

Application filed May 9, 1888.

To aZZ whom, it may concern.-

Be it known that I, MAHLON M. SCOTT, a citizen of the United States, residing at New ark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvementsin LeatherGraining Machines; and I do hereby declare the following to be a full, clear. and exactdescription of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

The object of this invention is to secure better and more advantageous results in leather graining and softening machines and reduce the cost of manufacture; and theinvention consists in the improved leather graining and softening machine and the arrangement and combination of parts thereof, substantially as will be hereinafter set forth, and finally embodied in the clauses of the claim.

Referring to the accompanying drawings, in which like letters of reference indicate corresponding parts in each of the several figures, Figure 1 is a side elevation of a leather graining and softening machine embodying my invention. Fig. 2, Sheet 2, is an end elevation Fig. 3 isaside elevation of the pivoted weight. Fig. 4 is a front View of thesame, showing its relation and position in connection with the graining'roll. Fig. 5 is a front view ofa tableadjusting screw, and Fig. 6 is a sectional view showing how the end of the adjusting-screw works in the bottom of the table.

In said drawings, A represents the frame for the machine.

B is a support bolted to the frame, having journal-bearings for the main shaft 0,130 which the motive power is to be applied.

D is a driving-wheel with crank-pin a.

E is a rod connecting said crankpin with revolving shaft F, carrying grainingroll I.

G G are upright frames secured firmly to the main frame of the machine,in which aresecured ways or guides b b. The tops of these frames are curved over to the inside, as shown in Fig. 2.

H H are toothed bars secured to the under side of the curved tops of said frames.

0 c are bearings secured to shaft F and on Serial No. 273,374. (No model.)

which it revolves, running between ways or guides 12 2; when the machine is in motion.

(1 d are gear-wheels rigidly secured to said shaft F and meshing into the toothed bars H.

g g are annular rings on shaft F, but not secured thereto, and preferably placed between the graining-roll and the gear-wheels at both endsoithegrainingroll. From oneside ofthese rings project arms 9 g, to which is secured, or made integral therewith, the curved weight 9, (shown in Figs. 1 and 3,) extending the whole length of the graiuing-roll and between said annular rings. This curved weight g is so arranged that it shall bear on the loop of the leather immediately after it has passed under the graining-roll.

h is a bed secured to the frame of the machine, and h is a section of said bed projecting a little distance beyond the front of the machine and sloping downward.

2 z are strips running lengthwise and pivotally connected with the bed by the adjustingscrews 7r 7;, arranged on each side of the machine.

m on are cross-pieces secured firmly to said strips and form the table or support for the leather to be operated on.

e" and m are hinged sections of t and m and are piv otally connected to the piece h by screws 7;.

a, Fig. 6, is a head of screw is, made convex so as to fit the concavity 0 in the strip 2'. The screw it is also provided with an annular recess, p, in which is fitted a collar or plate, r, firmly secured to the strip z.

The graining-roll may be covered with leather or rubber, or wirecloth, or may be entirely of wood.

If greater pressure is desired,a weighted 1ever can be suspended from the rings 9 g.

The table in can be adjusted to any position by means of theadjusting-screws It, so as to bring the leather evenly against the grainingroll,or can be adjusted to any angle longitudi' nally or transversely,s0asto change the course of travel of the leather through the machine.

The hinged section m is made adjustable in the same manner as the table by the screws k and serves as an apron or feeder to the graining-roll.

The table and the grainingroll maybe covered with any desired material; or, if desired, the surface of the graining-roll may be of one material and the surface of the table of another material.

Before presenting the loop of the leather for the action of the graining-roll the grainingroll should be brought to the position shown in dotted lines, Fig. 1.

In commencing operations the operator folds the hide or piece of leather so as to form a loop, folding over one-half or more,as may be desired. The loop is then placed upon the apron or feed-table in front and presented ready'for the action of the grainingroll, and the machine is then started. As soon as the loop has passed from under the graining-roll the pivoted weight impinges upon the fold and keeps the loop continuously formed ahead of the roll.

I am aware that leather-finishing machines have heretofore been constructed in which a graining-roll has received a combined oscillating and reciprocating motion; but in none of these machines does the grainingroll have a full rotary motion, nor does the graining-roll press continuously upon a loop of leather and maintain the loop in position while being operated on, as in my machine.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a machine for graining and softening leather, a weight loosely pivoted to the graining-roll shaft at both ends of the graining-roll and extending immediately in front of but separate from the graining-roll, as described, and for the purposes set forth.

2. An improved leather graining and softening machine, consisting of arevolving shaft carrying a grainingroll having a combined 4 rotary and reciprocal motion,a weight pivoted to said shaft, bearings for said shaft adapted to move reciprocally in ways or guides, gearwheels on said shaft engaging with teeth on the under side of bars rigidly secured to the top of 45 the frame and adapted to give positive motion to said gear-wheels, an adjustable table for holding the leather, and mechanism for imparting motion to said graining-roller shaft,

substantially as described, and for the pur- 5o poses set forth. v

3. In a leather graining and softening machine,the eonibinatiomwith the frame ofa machine and the driving mechanism thereof, of a rod connecting said driving mechanism with a 55 rotating shaft carrying a graining-roll, a rotating shaft, gear-wheels secured to said shaft, bearings for said shaft adapted to reciprocate in horizontal ways, a graining-roll, a weight pivoted to said shaft and adapted to bear upon 6 a leather loop immediately in front of said graining-roll,ways or guides in which the shaftbearings reciprocate, toothed bars arranged at the top of the frame and adapted to engage with the gear-wheels, an adjustable horizontal 6 

